FORAMINIFERA OF NORTH PACIFIC OCEAN. 



87 



Distribution. — Tliis species is very widely distributed in the various 

 ocean basins. In the North Pacific it is recorded by Brady from one 

 Challenger station, 232, in 345 fathoms, on the 

 Hyalonema-groujid south of Japan. Bagg rec- 

 ords it from a single Albatross station, H4567, 

 in 1,307 fathoms, near the Hawaiian Islands. 

 Goes did not note the species in the eastern Pa- 

 cific material examined by him, and I have failed 

 to find it in material from the same region. 

 Just east of the Hawaiian Islands it has been 

 noted in material from a few stations, in 1,424- 

 2,615 fathoms. I have found it also at one sta- 

 tion just off the Hawaiian Islands, in 392 fath- 

 oms. It has occurred at a great number of 

 stations in the Western Pacific, about Japan 

 and in the region to the south. The depth of the 

 stations at winch it was taken range from 76 to 

 1,299 fathoms, with the average depth between 

 500 and 1,000 fathoms. 



From a study of the various figures of specimens 

 assigned to this species it would seem as though 

 there were two or more dis- 

 tinct forms confused under 

 this name. The most com- 

 mon and typical form seems 

 to be that figured here and 

 in the Challenger report on 

 plate 51, fig. 8. In the North Pacific this is the 

 common form. 



BULIMINA ROSTRATA H. B. Brady. 



Bulimina rostrata H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 408, pi. 51, figs. 14, 15.— 

 Egger, Abk. kon. bay. Akad. \\"iss. MLinchen, CI. 

 ii, vol. 18, 1893, p. 287, pi. 8, figs. 96, 97. 



Description. — Test ovoid, tapering to an acute 

 point, sometimes with a distinct apical spine; 

 chambers arranged triserially, but indistinct in 

 front view; surface with a series of raised costa? 

 running from the apical end to the last-formed 

 whorl, concealing the sutures; end view showing 

 the sutures; wall punctate, opaque, white; aper- 

 ture elongate, comma-shaped. 

 Length 0.3-0.5 mm. 

 Distribution. — Brady found this species in material from four 

 < '/m/hnger stations in rather deep water in the South Atlantic and 



Fig. 139.— Bt-limina acu- 



LEATA. X 75. a, FRONT 

 VIEW; b, APERTURAL 

 VIEW. 



Fig. 140.— BiLnriXA ros- 

 trata. X 150. a, FRONT 



VIEW; b, APERTURAL 

 VIEW. 



